49705561 has 2 divisors, whose sum is σ = 49705562. Its totient is φ = 49705560.

The previous prime is 49705559. The next prime is 49705567. The reversal of 49705561 is 16550794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27237961 + 22467600 = 5219^2 + 4740^2 .

It is a cyclic number.

It is not a de Polignac number, because 49705561 - 2¹ = 49705559 is a prime.

Together with 49705559, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 49705561.

It is not a weakly prime, because it can be changed into another prime (49705567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24852780 + 24852781.

It is an arithmetic number, because the mean of its divisors is an integer number (24852781).

Almost surely, 2^49705561 is an apocalyptic number.

It is an amenable number.

49705561 is a deficient number, since it is larger than the sum of its proper divisors (1).

49705561 is an equidigital number, since it uses as much as digits as its factorization.

49705561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 49705561 is about 7050.2170888562. The cubic root of 49705561 is about 367.6785773476.

The spelling of 49705561 in words is "forty-nine million, seven hundred five thousand, five hundred sixty-one".